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The tolerance of Rhizopus arrihizus to U(VI) and biosorption behavior of U(VI) onto R. arrihizus

Paper ID Volume ID Publish Year Pages File Format Full-Text
3927 199 2010 5 PDF Available
Title
The tolerance of Rhizopus arrihizus to U(VI) and biosorption behavior of U(VI) onto R. arrihizus
Abstract

This work focused on U(VI) biosorption using suspended Rhizopus arrihizus. To understand the biosorption process, the tolerance of the strain to U(VI) and the effects of solution pH, initial U(VI) concentration, temperature, and contact time on U(VI) removal were investigated in batch systems. The results demonstrated that R. arrihizus can grow normally in 200 mg L−1 uranium-contained medium. Optimum biosorption was observed at solution pH 4.0 and the maximum biosorption capacity (112.2 mg g−1) was obtained at initial U(VI) concentration of 200 mg L−1. The biosorption process appeared to be temperature independent. Biosorption equilibrium was established within 90 min and the pseudo second-order model was found to fit accurately with the experimental data. FT-IR analysis and SEM morphology indicated that the structure of the strain remained integral after biosorption. Amino group plays an important role in the biosorption process, hydroxyl and carboxyl groups are also involved in U binding.

Keywords
Biosorption; Rhizopus arrihizus; Tolerance; Uranium; Functional groups; Batch systems
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The tolerance of Rhizopus arrihizus to U(VI) and biosorption behavior of U(VI) onto R. arrihizus
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 51, Issues 1–2, 15 August 2010, Pages 19–23
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us